Case Report

Korean Society of Economic and Envir Econ. Environ. Geol. 2017; 50(1): 73-83

Published online February 28, 2017

https://doi.org/10.9719/EEG.2017.50.1.73

© THE KOREAN SOCIETY OF ECONOMIC AND ENVIRONMENTAL GEOLOGY

A Survey Report on the Polymetallic Mineralization in the Oyon Mineralized District, Central Peru

Jaeho Lee*, Injoon Kim and Hyeong-tae Nam

Korea Institute of Geoscience and Mineral Resources, Daejeon 34132, Republic of Korea

Correspondence to : jhlee@kigam.re.kr

Received: October 19, 2016; Revised: December 2, 2016; Accepted: February 9, 2017

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided original work is properly cited.

Abstract

The surveyed mines are located in a polymetallic vein, replacement, and skarn mineral district in the central Andes of Peru. Iscaycruz, which includes underground and open pit mines that produce zinc and lead concentrates, was the largest mineral deposit of an important group of base metal deposits in the Andes of central Peru. The deposits are sub-vertical seams of polymetallic ores(Zn, Cu, and Pb). These seams are hosted by Jurassic and Cretaceous sedimentary rock formation. The intrusion of igneous rocks in these formations originated metallic deposits of metasomatic and skarn types. The Raura mine is composed of polymetallic deposit of veins and replacement orebodies. The main sedimentary unit in the area is Cretaceous Machay Limestone. The Raura depression contains several orebodies each with different mineralization: predominantly Pb-Zn bearing Catuvo orebody; Ag-rich galena-bearing Lake Ninacocha orebody; Cu-Ag bearing Esperanza and Restauradora orebody. Huaron is a hydrothermal polymetallic deposit of silver, lead, zinc, and copper mineralization hosted within structures likely related to the intrusion of monzonite dikes, principally located within the Huaron anticline. Mineralization is encountered in veins parallel to the main fault systems, in replacement bodies known as “mantos” associated with the calcareous sections of the conglomerates and other favourable stratigraphic horizons, and as dissemination in the monzonitic intrusions at vein intersections.

Keywords polymetallic mineralization, deposit type, resources and reserves, Oyon mineralized district, Peru

페루 중부 오욘 다중금속 광화작용에 대한 조사보고

이재호* ·김인준 ·남형태

한국지질자원연구원 광물자원연구본부

요 약

Article

Case Report

Korean Society of Economic and Envir Econ. Environ. Geol. 2017; 50(1): 73-83

Published online February 28, 2017 https://doi.org/10.9719/EEG.2017.50.1.73

Copyright © THE KOREAN SOCIETY OF ECONOMIC AND ENVIRONMENTAL GEOLOGY.

A Survey Report on the Polymetallic Mineralization in the Oyon Mineralized District, Central Peru

Jaeho Lee*, Injoon Kim and Hyeong-tae Nam

Korea Institute of Geoscience and Mineral Resources, Daejeon 34132, Republic of Korea

Correspondence to:jhlee@kigam.re.kr

Received: October 19, 2016; Revised: December 2, 2016; Accepted: February 9, 2017

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided original work is properly cited.

Abstract

The surveyed mines are located in a polymetallic vein, replacement, and skarn mineral district in the central Andes of Peru. Iscaycruz, which includes underground and open pit mines that produce zinc and lead concentrates, was the largest mineral deposit of an important group of base metal deposits in the Andes of central Peru. The deposits are sub-vertical seams of polymetallic ores(Zn, Cu, and Pb). These seams are hosted by Jurassic and Cretaceous sedimentary rock formation. The intrusion of igneous rocks in these formations originated metallic deposits of metasomatic and skarn types. The Raura mine is composed of polymetallic deposit of veins and replacement orebodies. The main sedimentary unit in the area is Cretaceous Machay Limestone. The Raura depression contains several orebodies each with different mineralization: predominantly Pb-Zn bearing Catuvo orebody; Ag-rich galena-bearing Lake Ninacocha orebody; Cu-Ag bearing Esperanza and Restauradora orebody. Huaron is a hydrothermal polymetallic deposit of silver, lead, zinc, and copper mineralization hosted within structures likely related to the intrusion of monzonite dikes, principally located within the Huaron anticline. Mineralization is encountered in veins parallel to the main fault systems, in replacement bodies known as “mantos” associated with the calcareous sections of the conglomerates and other favourable stratigraphic horizons, and as dissemination in the monzonitic intrusions at vein intersections.

Keywords polymetallic mineralization, deposit type, resources and reserves, Oyon mineralized district, Peru

페루 중부 오욘 다중금속 광화작용에 대한 조사보고

이재호* ·김인준 ·남형태

한국지질자원연구원 광물자원연구본부

Received: October 19, 2016; Revised: December 2, 2016; Accepted: February 9, 2017

요 약

    KSEEG
    Apr 30, 2024 Vol.57 No.2, pp. 107~280

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